/*
 * Copyright 2006-2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.martinimix.dao.syndication;

import java.util.Collection;

import net.martinimix.domain.syndication.SyndicationFeed;

/**
 * Provides a syndication feed data access object.
 * 
 * @author Scott Rossillo
 *
 */
public interface SyndicationFeedDao {

	/**
	 * Returns the feed identified by the given id.
	 * 
	 * @param id the unique identifier for the feed
	 * to be returned
	 * 
	 * @return
	 */
	public SyndicationFeed findFeed(long id);
	
	/**
	 * Returns a collection of all known feeds.
	 * 
	 * @return a <code>Collection<code> containing all known
	 * <code>SyndicationFeed</code> or an empty <code>Collection</code>
	 * if no feeds exist
	 */
	public Collection getAllFeeds();
	
	/**
	 * Saves the given feed.
	 * 
	 * @param feed the <code>SyndFeed<code> to save; may
	 * not be <code>null</code>
	 */
	public void save(SyndicationFeed feed);
	
	
}
